890308940

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{613}}^1\times {\mathrm{719}}^1$

素因数の和:1442

約数の個数: 48

約数和(自身を含む): 1893870720

約数和(自身を除く): 1003561780

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 613, 719, 1010, 1226, 1438, 2020, 2452, 2876, 3065, 3595, 6130, 7190, 12260, 14380, 61913, 72619, 123826, 145238, 247652, 290476, 309565, 363095, 440747, 619130, 726190, 881494, 1238260, 1452380, 1762988, 2203735, 4407470, 8814940, 44515447, 89030894, 178061788, 222577235, 445154470, 890308940]

約数ペア:

[(1, 890308940), (2, 445154470), (4, 222577235), (5, 178061788), (10, 89030894), (20, 44515447), (101, 8814940), (202, 4407470), (404, 2203735), (505, 1762988), (613, 1452380), (719, 1238260), (1010, 881494), (1226, 726190), (1438, 619130), (2020, 440747), (2452, 363095), (2876, 309565), (3065, 290476), (3595, 247652), (6130, 145238), (7190, 123826), (12260, 72619), (14380, 61913)]